Splunk Search

Get filename from path with rex

altink
Builder

Hello

I am trying to get filename (name.exe) from a full path (dir + filename) from windows folders, ex:

C:\dir1\dir2\filename.ext

using code as below:

 

index = os_sysmon NOT Image="*Sysmon*" EventCode=1
| rex field=Image "Executable=(?P<Executable>[^\\\]+)$"
| table Image Executable

 


Problem:
Executable always empty

Can you please advise?

best regards
Altin

Labels (1)
Tags (1)
0 Karma
1 Solution

richgalloway
SplunkTrust
SplunkTrust

Since the Image field does not contain the string "Executable=" the regular expression does not match and rex extracts nothing.  Try removing "Executable=" from the command.

---
If this reply helps you, Karma would be appreciated.

View solution in original post

0 Karma

richgalloway
SplunkTrust
SplunkTrust

The regular expression shown could be good, but we can't tell without seeing a sample event (not just a file path).

---
If this reply helps you, Karma would be appreciated.
0 Karma

altink
Builder

thank you @richgalloway  for the reply

attached is an example of my searchrex_issue_01.jpg

0 Karma

richgalloway
SplunkTrust
SplunkTrust

Since the Image field does not contain the string "Executable=" the regular expression does not match and rex extracts nothing.  Try removing "Executable=" from the command.

---
If this reply helps you, Karma would be appreciated.
0 Karma

altink
Builder

Thank You very much @richgalloway 

As You suggested, the following worked:

index = os_sysmon NOT Image="*Sysmon*" EventCode=1
| rex field=Image "(?P<Executable>[^\\\]+)$"
| table Image Executable
Get Updates on the Splunk Community!

Adoption of RUM and APM at Splunk

    Unleash the power of Splunk Observability   Watch Now In this can't miss Tech Talk! The Splunk Growth ...

March Community Office Hours Security Series Uncovered!

Hello Splunk Community! In March, Splunk Community Office Hours spotlighted our fabulous Splunk Threat ...

Stay Connected: Your Guide to April Tech Talks, Office Hours, and Webinars!

Take a look below to explore our upcoming Community Office Hours, Tech Talks, and Webinars in April. This post ...